open air subwoofer

e92justin · 03-07-2011, 08:00 PM

I was thinking about running an open air subwoofer system but don't know how to go about to doing it. What exactly would I need? I want to remove the rear seats and install 2 15" alpine type rs.

TMR · 03-07-2011, 08:16 PM

My installer is in Ontario so if you want something like this let me know.

IancoleTX · 03-07-2011, 08:27 PM

Damn boss thats some serious sound

e92justin · 03-07-2011, 11:27 PM

Besides the subs obviously and taking off the rear seats what else would I need to buy? I'm in California BTW so I don't know where to go

808MGuy · 03-08-2011, 01:28 AM

What is your goal? 2-15" subs may sound like a lot of bump but now when you try to implement an infinite baffle system, you lose a lot of that. IB applications are not known to do well if you just want to ground and pound. They are known to be dead on accurate in terms of SQ if done right. If you're looking to ground and pound, you'd probably be better off putting them in an sealed or vented enclosure depending on your space limitations.

TMR · 03-08-2011, 02:19 AM

Quote:

Originally Posted by 808MGuy

What is your goal? 2-15" subs may sound like a lot of bump but now when you try to implement an infinite baffle system, you lose a lot of that. IB applications are not known to do well if you just want to ground and pound. They are known to be dead on accurate in terms of SQ if done right. If you're looking to ground and pound, you'd probably be better off putting them in an sealed or vented enclosure depending on your space limitations.

right on the money. My system is definitely not super loud but awesome for SQ. Sounds really good.

e92justin · 03-09-2011, 09:06 PM

Quote:

Originally Posted by 808MGuy

What is your goal? 2-15" subs may sound like a lot of bump but now when you try to implement an infinite baffle system, you lose a lot of that. IB applications are not known to do well if you just want to ground and pound. They are known to be dead on accurate in terms of SQ if done right. If you're looking to ground and pound, you'd probably be better off putting them in an sealed or vented enclosure depending on your space limitations.

the only problem is i want to put 2 15"s in my trunk but the box wont fit. 2 12"s barely fit in there.

TMR · 03-09-2011, 09:41 PM

Quote:

Originally Posted by e92justin

the only problem is i want to put 2 15"s in my trunk but the box wont fit. 2 12"s barely fit in there.

I just showed you that you can put 2 15's in the trunk.

sneaks · 03-09-2011, 09:45 PM

why wouldn't you fire the subs into the cabin?

nelson29 · 03-09-2011, 11:29 PM

here's my car with 2 dynaudio esotar2 1200 sub in IB.

More pics can be found in this thread http://www.diymobileaudio.com/forum/...build-log.html

808MGuy · 03-10-2011, 01:19 AM

Quote:

Originally Posted by nelson29

here's my car with 2 dynaudio esotar2 1200 sub in IB.

Show off!

Quote:

Originally Posted by e92justin

the only problem is i want to put 2 15"s in my trunk but the box wont fit. 2 12"s barely fit in there.

If you want more output, you'd be better off with the 2 sealed 12s than the 2 IB 15s.

Thumperx · 03-10-2011, 11:48 AM

Quote:

Originally Posted by TMR

I just showed you that you can put 2 15's in the trunk.

TMR is correct. He has just showed you a IB system with 2 15s. The trunk becomes your sub box (no need for a sealed, vented, or band-pass sub box). It sounds like you need to go to your local car audio installation shop and educate yourself to the details. There's A LOT of work involved than just mounting & placing subs on MDF panel.

Quote:

Originally Posted by sneaks;

why wouldn't you fire the subs into the cabin?

Subs frequencies are omni directional and can be "fired" either way.

335forme · 03-10-2011, 07:33 PM

You ever heard of infinite baffle? 10s are way better for sound q 15s not so much

I had 2 subs in the rear deck. NO VIBRATION, uses the trunk as the enclosure. Make sure you get free air or subs that can be used infinite baffle. I had a 3/4" mdf baffle, lots of sound deadening, spray foam and suede

rude1978 · 03-12-2011, 11:02 PM

Quote:

Originally Posted by 335forme

You ever heard of infinite baffle? 10s are way better for sound q 15s not so much

I had 2 subs in the rear deck. NO VIBRATION, uses the trunk as the enclosure. Make sure you get free air or subs that can be used infinite baffle. I had a 3/4" mdf baffle, lots of sound deadening, spray foam and suede

That looks amazing

What car is that?

6spdcoupe · 03-12-2011, 11:21 PM

Quote:

Originally Posted by 335forme

You ever heard of infinite baffle? 10s are way better for sound q 15s not so much

I had 2 subs in the rear deck. NO VIBRATION, uses the trunk as the enclosure. Make sure you get free air or subs that can be used infinite baffle. I had a 3/4" mdf baffle, lots of sound deadening, spray foam and suede

TECHNICALLY that is not IB/Infinite Baffle.

10s are better than 15s for SQ ? Really ? Do you honestly believe that ? If so, I am sorry.

TMR · 03-13-2011, 12:25 AM

Quote:

Originally Posted by 6spdcoupe

TECHNICALLY that is not IB/Infinite Baffle.

10s are better than 15s for SQ ? Really ? Do you honestly believe that ? If so, I am sorry.

+1000 The person who designs the image subs prefers 15's for SQ over 10's, he is a good friend of mine and built my IB setup.

bmw325i · 03-13-2011, 03:52 AM

Correct me if I am wrong but none of the setups on this thread except tmr's are infinite baffle because they use the trunk as the box. It seems like tmr's even uses the trunk as a box as well the subs are just facing the other way sure they'd be infinite baffle if you open the trunk. Is it even possible to have a free air setup in a car because it doesn't seem like you get enough volume to consider it free air. I could be completely wrong here but just a thought.

kmarei · 03-13-2011, 11:28 AM

Quote:

Originally Posted by bmw325i

Correct me if I am wrong but none of the setups on this thread except tmr's are infinite baffle because they use the trunk as the box. It seems like tmr's even uses the trunk as a box as well the subs are just facing the other way sure they'd be infinite baffle if you open the trunk. Is it even possible to have a free air setup in a car because it doesn't seem like you get enough volume to consider it free air. I could be completely wrong here but just a thought.

an infinite baffle can use a box
as long as its 10x the Vas of the sub

milly · 03-13-2011, 01:21 PM

Could someone tell me how large the truck is like how many feet across for a bmw 328i? Thanks...i'm running subs as well and i need to see if my box is too big. Car is getting shipped here atm so thats why i can't go and check lol

e92justin · 03-14-2011, 11:24 PM

decided to just run the 2 10s in a ported box. placed it in the backseats so im a 2 seater now haha. very happy with the results i must say.

rude1978 · 03-15-2011, 05:23 PM

Quote:

Originally Posted by e92justin

decided to just run the 2 10s in a ported box. placed it in the backseats so im a 2 seater now haha. very happy with the results i must say.

Any pics?

335forme · 04-17-2011, 11:33 PM

Quote:

Originally Posted by rude1978

That looks amazing

What car is that?

Thanks! It was a Chrysler 300C SRT8

03-07-2011, 08:00 PM	#1
e92justin LCpl 28 Rep 193 Posts Drives: 2007 328i coupe Join Date: Jun 2010 Location: Hawaii iTrader: (0)	open air subwoofer I was thinking about running an open air subwoofer system but don't know how to go about to doing it. What exactly would I need? I want to remove the rear seats and install 2 15" alpine type rs.
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03-07-2011, 08:16 PM	#2
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	My installer is in Ontario so if you want something like this let me know. __________________ 2015 M3 BPM Tuned, Eibach, Magnaflow and more www.tmrmzine.com/m3/f80 SOLD E92 Slēk Carbon Fiber Widebody M3 www.tmrmzine.com/m3/slek/ SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/
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03-07-2011, 08:27 PM	#3
IancoleTX Dillo boxers 272 Rep 3,360 Posts Drives: 2019 M5C Join Date: Jan 2010 Location: USA iTrader: (14)	Damn boss thats some serious sound __________________ 2019 M5C Matte MBB / Tartufo
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03-07-2011, 11:27 PM	#4
e92justin LCpl 28 Rep 193 Posts Drives: 2007 328i coupe Join Date: Jun 2010 Location: Hawaii iTrader: (0)	Besides the subs obviously and taking off the rear seats what else would I need to buy? I'm in California BTW so I don't know where to go
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03-08-2011, 01:28 AM	#5
808MGuy Colonel 221 Rep 2,339 Posts Drives: 2009 E90 M3 Join Date: Jun 2008 Location: Oahu, Hawaii iTrader: (3)	What is your goal? 2-15" subs may sound like a lot of bump but now when you try to implement an infinite baffle system, you lose a lot of that. IB applications are not known to do well if you just want to ground and pound. They are known to be dead on accurate in terms of SQ if done right. If you're looking to ground and pound, you'd probably be better off putting them in an sealed or vented enclosure depending on your space limitations. __________________ 2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
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03-09-2011, 09:45 PM	#9
sneaks Lieutenant 17 Rep 431 Posts Drives: '08 335xi Join Date: Apr 2008 Location: 24 Sussex iTrader: (1) Garage List 2008 335xi [0.00]	why wouldn't you fire the subs into the cabin?
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03-09-2011, 11:29 PM	#10
nelson29 Banned 46 Rep 350 Posts Drives: 2005 E60 Join Date: May 2008 Location: Orlando, FL iTrader: (5)	here's my car with 2 dynaudio esotar2 1200 sub in IB. More pics can be found in this thread http://www.diymobileaudio.com/forum/...build-log.html
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03-10-2011, 07:33 PM	#13
335forme Second Lieutenant 11 Rep 268 Posts Drives: 2007 BMW 335i Join Date: Mar 2011 Location: Scottsdale, AZ iTrader: (5)	You ever heard of infinite baffle? 10s are way better for sound q 15s not so much I had 2 subs in the rear deck. NO VIBRATION, uses the trunk as the enclosure. Make sure you get free air or subs that can be used infinite baffle. I had a 3/4" mdf baffle, lots of sound deadening, spray foam and suede
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03-13-2011, 03:52 AM	#17
bmw325i Major General 223 Rep 5,120 Posts Drives: 2006 BMW 325i Join Date: Oct 2010 Location: United States iTrader: (8)	Correct me if I am wrong but none of the setups on this thread except tmr's are infinite baffle because they use the trunk as the box. It seems like tmr's even uses the trunk as a box as well the subs are just facing the other way sure they'd be infinite baffle if you open the trunk. Is it even possible to have a free air setup in a car because it doesn't seem like you get enough volume to consider it free air. I could be completely wrong here but just a thought.
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03-13-2011, 01:21 PM	#19
milly Captain 82 Rep 783 Posts Drives: 328i Join Date: Dec 2010 Location: Charleston, SC iTrader: (3) Garage List 2008 328i (e90) [9.00]	Could someone tell me how large the truck is like how many feet across for a bmw 328i? Thanks...i'm running subs as well and i need to see if my box is too big. Car is getting shipped here atm so thats why i can't go and check lol
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03-14-2011, 11:24 PM	#20
e92justin LCpl 28 Rep 193 Posts Drives: 2007 328i coupe Join Date: Jun 2010 Location: Hawaii iTrader: (0)	decided to just run the 2 10s in a ported box. placed it in the backseats so im a 2 seater now haha. very happy with the results i must say.
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